21idea.cn
Aggregated from public BGP, CT logs, our scan layer, honeypots and global probes.
Run a live full scan of 21idea.cn
On-demand: ports, banners, TLS, tech-stack, subdomains and origin/IP-leak detection. Results are shared publicly for everyone to link to.
DNS Records
WHOIS / Registration
Registration data planned
Registrar, creation/expiry dates and domain status via RDAP. Rolling out gradually — bulk WHOIS is rate-limited, so we resolve on a prioritized cadence.
Subdomains
Every subdomain we know about — harvested from CT-log SANs, scan-observed certs and HTML body references — paired with its current A/AAAA target.
| Subdomain | Resolves to | Last seen |
|---|---|---|
| 21idea.cn | 2026-08-02 20:00:37.785 |
Tech Stack
Tech detection pending
Wappalyzer-rules detect CMS, frameworks, analytics, JS libs and server-side languages on this domain.
TLS Certificates
Certificate observations pending
TLS certs naming this domain in subject or SANs will appear here as our scan-layer catches them.
IPs Citing This Domain
No citing IPs found yet
As the world-sweep progresses, hosts referencing this domain in their HTML will surface here.
Origin / IP-Leak
When a hostname is served behind a CDN (e.g. Cloudflare), the origin server can sometimes be identified by matching its TLS cert against the protected hostname. Findings shown here are heuristic candidates, not guarantees.
No origin-IP leaks detected (yet)
Either this domain doesn't sit behind a CDN, or we haven't seen a TLS cert from a non-CDN IP matching this hostname. Run a fullscan to refresh the cert→IP cross-reference.
Threat Intelligence
Domain threat-intel pending
Matches in URLhaus, OpenPhish, PhishTank, malware feeds, and Spamhaus DBL.
History
Passive DNS — every value this name ever resolved to and when we first / last observed it. Updates every cycle of our forward-DNS crawler.
| Type | Value | First seen | Last seen |
|---|---|---|---|
| A | 208.98.40.74 | 2026-06-25 07:48:58.943 | 2026-06-26 00:52:42.743 |
| A | 208.98.40.209 | 2026-06-25 10:02:06.075 | 2026-06-25 22:21:04.867 |
| A | 208.98.43.73 | 2026-06-25 10:27:57.874 | 2026-06-25 12:16:53.285 |
| A | 208.98.40.205 | 2026-06-25 11:23:58.357 | 2026-06-26 02:05:01.915 |
| A | 208.98.40.207 | 2026-06-25 11:27:41.982 | 2026-06-25 11:49:37.367 |
| A | 208.98.40.77 | 2026-06-25 12:22:23.417 | 2026-06-25 13:13:59.431 |
| A | 208.98.40.80 | 2026-06-25 12:29:52.044 | 2026-06-25 13:06:03.088 |
| A | 208.98.43.76 | 2026-06-25 13:23:52.957 | 2026-06-25 14:15:31.617 |
| A | 208.98.43.14 | 2026-06-25 13:29:15.164 | 2026-06-25 15:22:58.360 |
| A | 208.98.43.75 | 2026-06-25 14:11:07.500 | 2026-06-26 00:14:50.713 |
| A | 208.98.43.20 | 2026-06-25 15:01:38.576 | 2026-06-25 15:43:18.830 |
| A | 208.98.40.72 | 2026-06-25 15:34:42.816 | 2026-06-25 19:22:43.691 |
| A | 208.98.43.78 | 2026-06-25 16:03:11.888 | 2026-06-25 18:30:39.285 |
| A | 208.98.43.19 | 2026-06-25 16:34:30.283 | 2026-06-25 19:26:42.336 |
| A | 208.98.43.17 | 2026-06-25 17:32:02.689 | 2026-06-25 18:26:53.315 |
| A | 208.98.43.80 | 2026-06-25 17:36:00.067 | 2026-06-25 18:12:38.140 |
| A | 208.98.43.74 | 2026-06-25 19:31:23.532 | 2026-06-25 20:27:54.213 |
| A | 208.98.40.202 | 2026-06-25 19:36:32.189 | 2026-06-25 20:22:31.777 |
| A | 208.98.40.75 | 2026-06-25 20:36:31.703 | 2026-06-25 21:14:10.817 |
| A | 208.98.43.79 | 2026-06-25 20:41:17.418 | 2026-06-25 21:27:15.608 |
| A | 208.98.43.15 | 2026-06-25 21:37:34.618 | 2026-06-25 22:30:32.370 |
| A | 208.98.43.11 | 2026-06-25 22:34:57.472 | 2026-06-25 23:17:29.976 |
| A | 208.98.43.16 | 2026-06-26 00:05:01.132 | 2026-06-26 00:09:52.280 |
| A | 208.98.43.12 | 2026-06-26 00:21:10.115 | 2026-06-26 01:13:29.263 |
| A | 208.98.40.79 | 2026-06-26 01:18:44.967 | 2026-06-26 01:46:03.703 |
| A | 208.98.40.206 | 2026-06-26 01:24:29.177 | 2026-06-26 02:00:25.155 |
| A | 208.98.43.99 | 2026-07-29 20:00:37.817 | 2026-07-30 23:07:33.283 |
| A | 208.98.40.37 | 2026-07-30 20:00:37.993 | 2026-07-30 20:48:02.288 |
| A | 208.98.40.224 | 2026-07-30 20:57:50.735 | 2026-07-30 21:34:12.295 |
| A | 208.98.43.92 | 2026-07-30 21:07:45.865 | 2026-07-30 21:16:13.172 |
| A | 208.98.43.33 | 2026-07-30 21:44:23.723 | 2026-07-30 22:02:28.026 |
| A | 208.98.40.226 | 2026-07-30 21:53:38.832 | 2026-07-30 22:40:07.711 |
| A | 208.98.40.228 | 2026-07-30 22:57:18.763 | 2026-07-30 23:34:33.970 |
| A | 208.98.43.31 | 2026-07-30 23:25:59.351 | 2026-07-30 23:44:08.158 |
| A | 208.98.43.91 | 2026-08-01 20:00:37.918 | 2026-08-01 20:00:37.918 |
| A | 208.98.43.95 | 2026-08-02 20:00:37.785 | 2026-08-02 20:00:37.785 |